Company lists · Data refreshed October 2026

Top 25 Flood control engineering consultants worldwide

Name: Flood control engineering consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 9,663 companies tracked

RevenueBase identified 9,663 company matches for flood control engineering consultants worldwide as of October 2026 and tracks 339,829 professional contacts across them, including 131,457 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for flood control engineering consultants worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 12, 2026. Country and city lists for flood control engineering consultants follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 12, 2026 How this list was built

9,663Companies

339,829Contacts tracked

131,457Verified emails

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The 25 largest flood control engineering consultants worldwide

Ranked by team size

Top 25 of 9,663 company matches for flood control engineering consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	AECOM	Exact match	Dallas, TX, United StatesHQ recorded Oct 12, 2026	10001+	65,956 contacts →
	Exact match “AECOM is the global infrastructure leader, committed to delivering a better world.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Stantec	Exact match	Edmonton, AB, CanadaHQ recorded Oct 12, 2026	10001+	29,839 contacts →
	Exact match “Stantec empowers clients, people, and communities to rise to the world’s greatest challenges at a time when the world faces more unprecedented concerns than ever before.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Tetra Tech	Exact match	Pasadena, CA, United StatesHQ recorded Oct 12, 2026	10001+	13,725 contacts →
	Exact match “Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Oct 12, 2026	5,001-10,000	6,380 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Michael Baker International	Exact match	Pittsburgh, PA, United StatesHQ recorded Oct 12, 2026	5,001-10,000	4,415 contacts →
	Exact match “Michael Baker International is a leading provider of engineering, consulting, and technology services spanning four Verticals: Infrastructure, Places and Facilities, Federal and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	STV	Exact match	New York, NY, United StatesHQ recorded Oct 12, 2026	1,001-5,000	3,752 contacts →
	Exact match “Follow STV for practical insight into the infrastructure, ideas and people making communities better.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Geosyntec Consultants	Exact match	Boca Raton, FL, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,521 contacts →
	Exact match “Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Brown And Caldwell	Exact match	Walnut Creek, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,510 contacts →
	Exact match “Headquartered in Walnut Creek, Calif, Brown and Caldwell is an employee-owned firm with 2,100+ professionals serving clients locally and globally from 52 locations.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Hazen And Sawyer	Exact match	New York, NY, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,251 contacts →
	Exact match “As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Olsson	Exact match	Lincoln, NE, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,229 contacts →
	Exact match “Olsson is an engineering firm made up of people who craft expert solutions and designs that improve communities.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,064 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	CHA Consulting, INC	Exact match	Albany, NY, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,733 contacts →
	Exact match “CHA Consulting, Inc.(CHA) is an innovative, full-service engineering, design, consulting, and program/construction management firm providing a wide range of technology-enhanced…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	JMT	Exact match	Serving Clients Across The Us, MD, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,725 contacts →
	Exact match “Johnson, Mirmiran & Thompson is an employee owned, multi-disciplined firm offering a full array of planning, design, and construction phase consulting services for infrastructure…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	GEI Consultants, INC	Exact match	Woburn, MA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,639 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Freese And Nichols	Exact match	Fort Worth, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,551 contacts →
	Exact match “Freese and Nichols is a professional planning, consulting and engineering firm serving clients across the United States.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Ingetec	Exact match	Bogota, ColombiaHQ recorded Oct 12, 2026	1,001-5,000	1,493 contacts →
	Exact match “Ingetec está conformado por un grupo de profesionales con alto nivel de especialización, quienes trabajan dentro de las diferentes gerencias y divisiones que componen la…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Antea Group Nederland	Exact match	Heerenveen, NetherlandsHQ recorded Oct 12, 2026	1,001-5,000	1,439 contacts →
	Exact match “Antea Group is het thuis van 1800 trotse ingenieurs en adviseurs.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	GPI Greenman-Pedersen, INC	Exact match	Melville, NY, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,379 contacts →
	Exact match “With a staff of over 1,800 professionals, Greenman-Pedersen, Inc.(GPI) is a leading engineering consulting firm that specializes in the innovative design and construction of…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Consor	Exact match	United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,329 contacts →
	Exact match “Consor is a leading engineering and consulting firm advancing intelligent, future-ready infrastructure across transportation and water systems.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,266 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Volkert, INC	Exact match	Mobile, AL, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,201 contacts →
	Exact match “Volkert’s history began in 1925 when it was founded in New Orleans as Doullut & Erwin to provide waterfront and heavy construction services, as well as airport design services…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Haley & Aldrich	Exact match	Burlington, MA, United StatesHQ recorded Oct 12, 2026	501-1,000	1,166 contacts →
	Exact match “Haley & Aldrich is committed to solving our clients’ most meaningful challenges in the built and natural environments.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Barr Engineering CO	Exact match	Minneapolis, MN, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,108 contacts →
	Exact match “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	WSP Chile Y Argentina	Exact match	Vitacura, ChileHQ recorded Oct 12, 2026	10001+	1,057 contacts →
	Exact match “WSP en una empresa líder en servicios profesionales de consultoría en recursos hídricos, ingeniería, medio ambiente y sustentabilidad.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Associated Engineering	Exact match	Edmonton, AB, CanadaHQ recorded Oct 12, 2026	501-1,000	1,043 contacts →
	Exact match “At Associated, we are passionate about building communities that are vibrant, healthy and resilient and support economic growth.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “flood control engineering consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 9,663 flood control engineering consultants worldwide

See the full list, filter by size, metro and specialty, and access 131,457 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Flood control engineering consultants worldwide at a glance

As of Oct 12, 2026

38.7%Verified-email coverage

35.2Average contacts per company

1-10Median size (employees)

0.9%Largest-city concentration · Sao Paulo

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

4,856

11-50

3,278

51-200

1,042

201-500

281

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for flood control engineering consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “flood control engineering consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 131,457 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on October 12, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Flood control engineering consultants by location

44 lists · largest first

Every Flood control engineering consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “flood control engineering consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many flood control engineering consultants are there worldwide?

RevenueBase identified 9,663 company matches for flood control engineering consultants worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

AECOM tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most flood control engineering consultants?

The United States leads with 2,501 companies, followed by Brazil (590) and Australia (420). Every flood control engineering consultants list by country and city is linked on this page.

Which city has the most flood control engineering consultants?

Sao Paulo leads with 90 company records, followed by Tehran (81) and Houston (72).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 131,457 professional contacts with verified work emails tracked across these 9,663 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 12, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.